Clockwork motor

摘要

A clockwork motor casing is formed of two synthetic resin parts 1 and 2 which fit together with pins and sockets. e.g 1e and 2e, and which have formations 1s and 2s which together form a window for retaining the necked and headed end 7c of the power spring. Pin/socket 1f/2f and overlapping wall sections 1w, 2w are both near the window and help withstand the forces imposed by the spring